Dosimetry and Therapeutic Ratios for Rhenium-186 HEDP

Table 1

Physical properties of rhenium-186.

Property	Re-186
Physical half-life	89.3h
Daughter nuclei (branching ratios)	W-186 (7.5%)
	Os-186 (92.5%)
Mean beta energy	346,7 keV
Max. beta energy (abundance)	1077 keV (71%)
	939 keV (22%)
Gamma energy (abundance)	137 keV (9%)
Max. penetration in tissue	4.5 mm (average 1.1 mm)